This is a short story in e-book form, probably transcribed into some project like Project Gutenberg from its original existence in a science fiction periodical, though there's no indication of provenance whatsoever in the version provided free by Kindle. An internet search uncovers that it was apparently published in December 1953 in the magazine Science Fiction Adventures, Given the date of publication, and the fact that Dick didn't die until 1982, I suspect the copyright status of the free version on Kindle may also be a bit questionable.
The story is of the sub-genre "banal ordinary life with a dire secret", and it has a twist ending of the sort that no-one of my generation would fail to predict.
Dick doesn't try very hard with his aliens - they are just standard winged creepy-crawlies who can adopt a human body - but that is not the point of this short work. It is the insidiousness of the takeover (not unlike the silent undermining of a house by termites, if you think about it) that provides the horror - that, and the primary image of a hanging body in a public place to which no-one pays any attention whatsoever.